1
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

In dilute alkaline solution $$\mathrm{MnO}_4^{-}$$ changes to

A
$$\mathrm{MnO}_2$$
B
$$\mathrm{MnO}_4^{2-}$$
C
$$\mathrm{MnO}$$
D
$$\mathrm{Mn}_2 \mathrm{O}_3$$
2
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following complex show optical isomerism?

(i) $$c i s-\left[\mathrm{COCl}(\mathrm{en})_2\left(\mathrm{NH}_3\right)\right]^{2+}$$

(ii) $$cis-\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}$$

(iii) $$cis-[ \left.\mathrm{CO}(\mathrm{en})_2 \mathrm{Cl}_2\right] \mathrm{Cl}$$

(iv) $$cis- \left[\mathrm{CO}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$$

A
(i), (ii), (iii)
B
(i), (ii)
C
(i), (iv)
D
(i), (ii), (iv)
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0
COMEDK 2023 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 9 English
A
COMEDK 2023 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 9 English Option 1
B
COMEDK 2023 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 9 English Option 2
C
COMEDK 2023 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 9 English Option 3
D
COMEDK 2023 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 9 English Option 4
4
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Mohr's salt has the formula

A
$$\mathrm{FeSO}_4 \cdot 7 \mathrm{H}_2 \mathrm{O}$$
B
$$\mathrm{FeSO}_4\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}$$
C
$$\mathrm{Fe}\left(\mathrm{SO}_4\right)_3\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}$$
D
$$\mathrm{MgSO}_4 \cdot 7 \mathrm{H}_2 \mathrm{O}$$
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